Here's links to abstracts on a selection of research articles about baby and toddler sleep patterns (sourced via kellymom)
Sleep patterns of New Zealand infants during the first 12 months of life.
Psychomotor and social development of breast-fed and bottle-fed babies during their first year of life.
A longitudinal study of night waking in the first year.
The sleep patterns of normal children.
Attachment and sleep: a study of night waking in 12-month-old infants.
Night waking, sleep-wake organization, and self-soothing in the first year of life.
The relationship between daytime exposure to light and night-time sleep in 6-12-week-old infants.
